<div class="tab-pane" id="3">
    <ul class="tags">                                       
        <?php 
        foreach ($tag as $tags) {?>
        <li>
            <?=anchor(base_url()."AssuntoController/buscaAssunto/".$tags->codigo_pagina,"<i class=icon-tag></i>".$tags->palavra_chave);?>
        </li>
            <?php
        }?>
    </ul>
</div>